class Solution
{
public:
    vector<int> sequentialDigits(int low, int high)
    {
        vector<int> nums = {12, 23, 34, 45, 56, 67, 78, 89,
                            123, 234, 345, 456, 567, 678, 789,
                            1234, 2345, 3456, 4567, 5678, 6789,
                            12345, 23456, 34567, 45678, 56789,
                            123456, 234567, 345678, 456789,
                            1234567, 2345678, 3456789,
                            12345678, 23456789,
                            123456789};
        sort(nums.begin(), nums.end());
        vector<int> result;
        for (auto num : nums)
        {
            if (num >= low && num <= high)
            {
                result.push_back(num);
            }
        }
        return result;
    }
};